Blizzard

You unleash the absolute cold that dwells deep within the Plane of Ice from a point within range. Each creature that starts their turn in a 60-foot-radius sphere centered on that point must make a Constitution saving throw. On a failed save, a target takes 12d10 cold damage and becomes  restrained by ice for the spells duration. An effected creature can use an action to break free by succeeding on a Strength Save against your spell save DC. On a successful save, a target takes half as much damage and iit isn't restrained. The Area is also considered difficult terrain.
All bodies of water in this area (outside of water-based creatures) are instantly frozen solid. Creatures that were in the frozen water are trapped, and may begin suffocating if submerged. A trapped creature can use an action to make a Strength check against your spell save DC to break free.
A creature reduced to 0 hit points by this spell is stable but petrified and has its speed reduced to 0. It can't regain hit points until thawed by greater restoration, heal, or wish spell.